[Rspamd-Users] Questions to DKIM signing

[Markus Neubauer]

First, as a new user, I like to say hello.

My questions are about DKIM signing

1) We use a mailgateway with rspamd for several domains, some dns is not
under our control.
2) The remote mailservers are within other networks and come in using
submission using one authenticated user like "xyz0001"
3) dkim for my own domain works perfectly

Is there a short path to follow to setup dkim signing for the other
domains, where the From: gives the dependant domain.
Thank you for any easy examples
Markus